Digital BW, The Print

I have been using  sets of user filled carts with MIS FSe for about a 2 months with very little printing- but with never a cleaning cycle required. A head test yesterday was perfect. 
I live in Florida ; I keep the printer covered (to keep the cat out !). 

I am wondering if a good vinyl cover over the printer might stabilize the humidity and minimize some of the printing problems being experienced by others ???  Could then get one of the temp/humid units from Radio Shack and keep the humidity at some level (70%) via a damp sponge in a small plastic bottle, etc....

Best,
Alex