As said , I won’t give particulars , if skeptical go over on the Montana Owners forum . Marathon yes , and the bad rap was also the G614, and continues with blowouts. Sure they should pick up the tab on a blowout , the price you pay for one is the insurance included.
Sailun second choice :h I don’t know how many comments I have read on the Montana forum where they have had problems with the G614 and was switching to Sailun. The Sailun at this point has a proven record. I have yet to read about a blowout.