Wellcome krub.
Sonsole damaged someone used epoxy to fix it,you can by DIY.
Automotive fuel are blended with many type of hydrocarbon ,gasohol is one in it can be used.
My 405GR has been used gasohol 91 for a 4 years,No probblem occur.
Fist at all you must be upgrade the old fuel rubber hose instead of the new rubber hose.
405GR+NGV+gasohol 91 for first start and end for stop engine.

