So the two filler hoses that run from the tube to the tank have rubbed against each other and made them unexceptionably thin on the walls. one is 1/2" and one is 1 1/2" inch. can radiator hose be used or do I have to special order it?

It has to be fuel compatable hoses. the fuel will make the hoses weak and it will leak over time. I know that there is some generic filler hose for sale at some specialty shops like performance shops, the old school kind. other than that, maybe a Napa auto parts. and as for the 1/2", i think there should be some 1/2" I/D hose for sale at the same place. make sure that it says that its compatible with FUEL INJECTION on the hose. these hoses tend to be stronger.

That'* what I figured 2 years of organic chemistry was on the mind before I jumped and go the wrong stuff