also instead of 2x a week go 1x a week, that's plenty for HRT. I have been doing quads for almost 3 years 1x a week no problem. Try changing up to the a$$ for a couple of week (only 1x a week) then go back to the quads also only 1x a week.

Another thing I do no is I dont stab. I know it sounds weird but I put the pin in SLOW. I mean I do it SLOW SLOW and 99% of the time I dont even feel it break the skin. If I come close to a nerve I just STOP for a few seconds then go again slow and it seems to move out of the way. I have never had a problem since doing this, before I hit a never ever now and again; not much fun.