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I tried swapping the worm gear without much luck. Should I try to swap worm?

Here is a graph without guiding and frequency analysis from PHDLogAnalyzer

I have an old GM8 and I am not able to get decent guiding with it. Maybe I am pushing it too much - I have a GSO RC8, which is about #25. I am getting about 1.5" RMS, which produces egg-shaped stars.

Welcome to the Group, For what it is worth, when I travel with my mount I still bring with me extra suff with me. Such as a spare set of DEC and RA cables,? nothing like forgetting to pack these to

Welcome Frank, A? wealth of knowledge and very experienced users here.? I've found it very helpful. Just bought a used G11 recently which is my 1st Losmandy mount which I'm still tuning up and

Hi Sean, Welcome to the group. I am new to Losmandy as well. I just bought a used G11 mount and am reading and learning a LOT from this group. There are a lot of very experienced people here. A real

Welcome to the group Frank! This is a great group to find information and assistance when needed.? Feel free to ask questions when you get stumped.? Everyone here is helpful, knowledgeable, and

Ken, You might want to try looking at the males and female threads using a magnifying lens, and use a flashlight to look inside. See if there are any burrs getting in the way. Sounds like it was a

Hi Frank, Congrats on your mount purchase! You'll find lots of info searching through this forum and also on the Losmandy YouTube channel. Good luck with your setup! John

Hello, I have just completed the sign up for the group. I am now sending my “sign-up” message. I have joined the Losmandy user group, because I am eagerly awaiting the delivery of a new GM8,

IF it worked originally the first two months, there's nothing wrong with the thread size.

Michael, See the nice notes and photos on Mark Crossley's website: www.wilmslowastro.com Look for his section on tips and tricks. He also lists the standard parts for the G11. And his recommended

Kenneth, If truly only 2 months old, contact the factory and ask for a replacement counterweight rod with threads slightly reduced in OD. Stop putting time into this...it was not made right. The

Thanks for all the thoughtful replies. I did clean out the female threads with some nitro-solvent (gun bore cleaner), then lubed with a light coating of gun oil. No change as yet. I see from the

Allan, I'm excited to see that you can carry the bad boy!.??I think I might mount mine to the coming weeks. Do you have plans to upgrade the optical encoder to 1024. I think you will see a very

And a lingering mystery...has another clue (I have been reading Perry Mason mysteries....it's true): Though I explained that the ring gear sits stop the flat upper thrust needle bearing, this fact

oh right, another thing is that it STILL takes about 15 seconds after a dither move for the axis to "settle down".? ? Whereby "settle down", I mean that guiding is reliable again without any sudden

Hello again, I thought that maybe there would be a lot to say, but there isn't.? The G11 DEC axis seems to work well over a fairly wide range of worm meshes.? Maybe because it has low friction even

Thanks for the tip. BG

Thanks for the write up.? I did not know the ring gear sits on only a needle thrust bearing, and effectively a bushing sleeve.? I would have thought it used a bearing for radial constraint, but ok,