A lot of the LED bulbs/fixtures on the market are very poorly/cheaply made, and you can bet Forest River is sourcing the cheapest of the cheap. I would find a quality fixture/bulb without Forest Rivers "help" and get back to camping.
These guys are widely considered to be the best available... http://www.m4products.com/
They were too pricey for me though, so after a LOT of research to find the right seller/product, I ordered direct from China via ebay.
The above response assumes you have properly verified that the LED bulbs/fixtures themselves are bad and that there are not bad electrical connections elsewhere in the circuit.
'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2013 Rockwood 8289WS w/Diamond pkg
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)