Any tips on using a perry pump with an evolution 60nt? Is the back plate really thick enouth for the drillilng and tapping? I want to put the fuel tank over the cg for two reasons. first the obvious and second I have not found a decent size fuel tank that will fit nicely in the nose of my Primus/Tarus. The OS 61 used in an earler one was just a bit to bulkey for that width of the nose.