I have an 8BA crank that I was going to offset grind to 2'' and use 21A rods with full floating bearings. Then the possibility of make a4" stroke rather than a 3 7/8" stroke by welding or adding metal to the outside of the rod journal. I have read in the past of this happening but it had some problems. Because of the advance in the welding of various metals with new techniques I was wondering if anyone had any thoughts? Tahks.