Fordmon

Hello All, Newbie to this forum, I have 2 questions, I own a 1999 Tiger River bengal hot tub. First question is, A while back (2months) ago one of my bottom jets stopped working (There are two side by side) I thought it might be clogged so I waited till spring and I cleaned (swirlaway) and drained my hot tub (annual twice a year) blew out all my jets with comp/air and had water blow out both sides of bottom jets. Filled my tub turned on and for a brief second it worked. Now it's not working again I have tried to look up the Piping diagram online with no luck. I have changed many parts in the last 2 years including Smart Jet system selector. Second question My cover is completely water logged, my tub is in an enclosed non heated room and I live in NH my cover itself is mint but I can't find the core insert separatly. seems I have to buy the whole cover at a cost of $300-450. My local Dealer only wants my money! Any help on these two questions would be so helpful. Thanks Scott