I just picked up a second Oliver HP 70 for parts to finish the 1936 OHP 70 I am currently restoring. The one I plan to use for parts has a single wheel on the front (see attached photo). Is this a desirable option and should I consider swapping it onto the one I am restoring? Also, I am planning to swap the rear wheels, but I am having trouble disassembling the hubs in order to take the wheels off (see attached photo). I would appreciate any tips on how to disassemble the wheels. Thanks.

Dave