[Stripit]

Years ago when my pull handle was very hard to pull i tried to spray a lube down the cable. Might have helped a tad, but was still a bugger. So crawled under and removed the cover for access to the attaching point to the valve and straighten out the cable. Found it was easy to operate, so ran the cable a differnt direction, changed the loop the factory installed to run around, and then reattached. Fixed the hard pull. You might have a different issue? Valve could be sticky?