Jerry,
Thanks for the pic. Was unaware of that method. I put on about 150 hours a? year, and haul every other year. When I haul, I can open the screw and get all out that way, and on the other years, just use a hose to suck it out and yes, some is left, but more new than old.
I do wish they didn't use a screw, but rather a bolt. I worry that I will not either be able to unscrew the screw or not tighten it enough.?