Hi all. I have a B7100HST with the RC60 belly mower. I was looking for a FEL for it. I found a B7100 non HST with FEL and a rod through the engine block. Then after researching my impulse buy I discovered that the HST and non HST have a slightly different wheelbase so I will need to do a little modding where the FEL framework mounts to the rear axle. I can handle that. My problem now is that I can't figure out how to remove the front engine mounted pump shaft front the front of the engine. It is held together on both ends with a double row chain. I see no master link to remove a chain. What will I have to do to switch the pump to my HST? Thanks!