...Unless it is under some kind of warranty and you HAVE to go through Tiffin for support on this....I'd start calling around, try and find someone else that might could get to this sooner. Maybe someone local, possibly a mobile RV repair shop?
Failing that, I'd just make due with it without opening that one slideout until May. Not sure what else you could do...
Will and Cheryl
2021 Newmar Baystar 3014 on F53 (7.3 V8) Chassis ("Brook")
2018 Jeep Wrangler JK ("Wilbur")