Hi Guys,

Just replacing my bottom bracket, had a Chain Haur CH52, and I'm trying to replace it with a Shimano BBUN55 (can't post pics or URLs so description below) but the Shimano feels WAY too tight... I've greased all the threads, but the originals I can pretty much hand tighten most of the way, but the Shimano I have to get a spanner on to get anywhere, to the point where it feels like I'm cross threading them. Is that normal or have I ordered the wrong size?

The CH52:
68x113L EN
BC1.37x24T

The BBUN55:
68
BC1.37x24
<- LL113 ->