I’m having the slow fuel/no fuel issue with my 2018 BigHorn. I’ve tried the factory fuel issue diagnostic procedure and the evap canister, MFCV both work but the tank won’t vent. I need a new tank but my local CDJR dealer parts department can’t order me a tank because the P/N on my present tank doesn’t cross reference so we don’t know what tank to order as the 26 gallon tank comes in three different part numbers ranging in cost from $300-$1300. Can you please tell me what tank is the proper replacement for 68323672AA? Thank you.