when installing the shaft in my new pump (for a 1300r) the shaft would spin so easily and freely (no resistance) but now that shaft is in place and fills the holes in the oil seals there seams to be a lot more resistance turning the shaft. I think this is because how tight the oil seals are, but seams a bit too tight. Is this supposed to be this way? i don't want to lose power from pump resistance, any Ideas?? thanks