i've been using indy 159s with 90a conical independent bushings with top washer on back, no washers on front, and an upsidedown kingpin nut on front . there was little to no break in period and the rebound felt really nice. you could get a deep turn without wheelbiting and the turning radius was noticeably tighter than stock bushings without a bottom washer setup.
when i bought these, i thought they were going to be too hard so i bought 88a conicals aswell, thinking they were going to be, you know? softer.
so i put them on my 169s with the exact same setting. i've been riding them for a week, and they still don't feel broken in. the rebound is horrendous. in fact they dont rebound at all. they almost feel plasticky. they feel harder also, but wheelbite easier. sounds impossible but it's how it feels to me.
now, this could be because i'm riding 169s instead of 159s and i'm also using a board with a bit more shallow concave than what i rode my 159s on. but, this board has a shorter wheel base. i just don't think these factors are what made the bushings feel so shitty. i also tried taking the top washer off but it still feels like shit. has anybody else had this experience? is 88a lower quality urethane? are any other durometers like this?
side note: do the 78a ones feel most like the stock bushings? 88a barrel bottoms were way too hard.