I've been dealing with the same problem on my 3250 BC. You can remove the top cap on the door side leg and put some grease inside. You will also need to grease the screw inside the jack. Hard to do this. Someone suggested putting some grease on a piece of angle iron and going up from the bottom to rub grease on the screw. I poured a bunch of oil in in from the top. It seemed to help. The street side leg is another story. In their infinite wisdom Heartland made no provision to service this in any way. You need to remove the propane tank and with a snips or nibbler or cut-off wheel remove a portion of the galvanized divider wall in the front of the compartment to gain access to the leg. Leave at least 1-2" along the edge so you can fasten a new piece of tin to cover it when you're done. You grease this one the same way. I made a new cover from a sheet of galvanized duct work and screwed it in place using sheet metal screws spaced about 2" apart. When you're all done they MIGHT work better but my guess is not much. I ordered new legs for mine. The new ones came but not knowing there are two different lengths, of course I got the ones that are too short. The longer ones are exactly the same but 4" longer. For some reason they cost over twice as much??? Supply and demand I guess. My next step is to tear mine apart and see if I can modify it to use the shorter legs by re-welding the mounts or something. By the way the new replacement legs do have 2 grease fittings...My next step after will probably be to get rid of the whole rig. I can't keep spending $1,000-2,000 a year on this thing to keep it working and looking right...Enough is enough. Sorry to vent...Don