Hi everyone,my 650 café project is near complete , fired it up today after motor rebuild, sounds great, very exiting ...but i am using a SR500 fuel tank with no cap, i think it is an 80' model tank ,been told some 650 caps are the same,having all sorts of problems finding the correct cap, bought a couple of cheapies on ebay that are listed as xs650/sr500 but they dont fit, the mount plate is in the wrong spot, , my tank measures 18mm from mount screw to inside edge of filler hole and 20mm from latch pin cntr to filler hole (78mm from mount screw to latch pin cntrs) filler hole 40mm, getting desperate not being able to finish it .... any help would be much appreciated.. Ron