That damn roto-start is the root cause of all these problems It's what ruined my pullstart bearing.
The pullstart assy for a .21BB, .21 hyper-8 or picco .26 all will fit each other...but the one-way bearing assy's are different.

The .21BB actually has a rod that extends out of the backplate and the one-way bearing sits inside the pullstart assy and just slides over the rod.

The picco .26 has the bearing inside the backplate and the rod that slides into it has the hex nut on the end of it. This hex nut/rod part is what sits inside the pullstart assy and slides into the bearing in the backplate.

I don't remember how the hyper-8's are configured but you see my point.

The picco is still fairly new so not all the LHS have spare parts handy and contacting OFNA is next to impossible. Perhaps there is an alternate assy I can use maybe the one out of a force .25 or some other OFNA engine.