blk97z28

iTrader: (3)

Umi single adjustable Roto / Poly, had stock bolts with washers with nylon locking nuts. Was told to upgrade these to 1/2" with washers / nylon locking nuts. I used an angle grinder with diamon tip to open the stock PHB frame holes. I've seen a few threads on here but can't seem to find them; I found the stock bolts rattled around inside the PHB holes and the stock mounting frame holes.

Thanks any input?!