The only problem I have seen with excessive endfloat is the possibility that back of the belt drive sprocket may rub on the case.
If it had way too much end float then I suppose you could have contact between the small end of the rod and the inside of the piston but it would have to be pretty extreme..
Not enough endfloat causes more problems that too much -from what I have seen. I have taken engines apart that were set at .005 and found the ends of the rollers turned blue. Jim
