I am having difficulty installing a new Airtek (wish I held off ordering a while so that I would have seen the previous post about Airtek poor quality) dual diaphragm fuel pump on my 1956 292. I am aware of the necessity of rotating the engine so that the eccentric is at its uppermost position and I have done that. However, I still can't raise the fuel pump high enough so that I can get the bolts started. Is there a trick I'm missing here?  Pertaining to Airtek poor quality, does anyone know of a better quality brand that is dual diaphragm?  I rebuilt my vacuum wiper motor a while back and it works very well. I prefer not to go to electric wipers just so I can run a single diaphragm pump.