I purchased a new gas tank, straps, and rubber insulators for my 81. The problem is that the straps aren't even close to being able to meet the forward bolt holes. The rubber insulators are ridiculously thick, so I took them off. I measured the thickness of my original 17 gallon tank and also the mounting straps. Everything is exact, but there is no way the straps will reach. Anyone else have this problem or have any advice? Thanks.