have you tried loosing all the bolts and/or remounting it?
if you did and it still touches, just trim the lowers.. its not visible anyway.
or just leave it as it is and let it melt itself :dontknow: :badteeth:
maybe try some of that exhaust wrap and put down there to keep it from melting the plastic??? of just build it up around down there with the heat tape.. theres somethign out there called Moose tape thats for high temp uses, If I remember the name correctly??