the knockoffs have been hear since the 80's .most I have seen and used are far better than most places will/can grind them..even the big guys use some offshore cranks with thise names on them. heavy metel is expensive and a good reason for light weight parts as well as crank lighting in the right places. I dont plenty of heavy metal in many different apps. and seen the moron way fo doing it in "promod engine" musta been a budget engine with used up parts. it was one of the funneyest thisng I had ever seen... 1 inch wide by 1/4" thick steep strap welded around the counter weights....wtf?? and much more than that throught the engine. as for the crank finish of the imports,Ive never had any issue with them I always polich befor assy and set the clearances where I want them( tight side, with thin syn oil) and coated bearings.OH How I love coated bearings. I think they may just be indestructable....well almost. I probably still have some mallory around hear somewhere... Ive even seen it installed by drilling down into the counter weight and pounded in...and...flung back out...you cant fix stupid. I think I still have the reamers for installing them correctly hear at home. I miss doing all that stuff.and racing too.
if they hit the piston skrt...the skirt is in the way.and weighs too much...time to lighten it. and or the rod is too short. probably both.