For "fun" I bought a restored 3255 in March "just to play with." After messing with it for a couple of weeks with my Innovate O2 setup, regardless of PVs, mixture settings etc I was unable to get the idle mixture right. It was loading up, idling rough, fouling plugs etc. So I sent it to Keith Craft to be dyno tuned. It should be back in my hands tomorrow and I'll post up the outcome. I can't see what would make it quirky, but it seems quirky. Looks cool though, so I got that goin' for me.