Good idea....but I don't think Fluke will appreciate receiving my 287 since modified (hacked) to run off solar power and hybrid capacitors!!!
You never know until you try the RMA process. All it will cost you is the price of postage (with tracking number). It is like asking a girl to dance at the high school prom.
They may not flinch at the modifications and perhaps due a firmware upgrade regardless? This assumes there is a firmware upgrade to fix the problem for the 287.
I have read many war stories of
abused Flukes being sent back and people getting new ones or repairs for free under the lifetime warranty.
edit: When you are in the USA, use an insured/tracking option so that if the Fluke 287 gets lost of damaged, you are covered.