It isn't all that difficult to get the crankshaft more or less straight Ty, though it would be quite a bit harder without a press than with one. My press came with a pair of hardened V blocks built into the base you press against, so it is all a bit quicker than if you are using blocks of this and that plus a rubber hammer, but I can say with confidence that a decent tradesman with experience would do it quicker and better using junk as a fixture, than I would using decent gear. Some people have got it, and some haven't - the tools aren't really what it is about.
