I think this came up in a previous discussion. ?At one point there was some inferior caps that ware provided as part of the kit. ?When I built my QCX 20 I opted to buy new caps for C25-C28 and install them instead of installing the ones that came with the kit just in case becuase some (not all) people were experiencing this problem with low power.
Here is a link to my original post:
/g/QRPLabs/topic/29337518#30515?
