We just had to replace the fan motor, and are having one heck of a time sliding the blower fan back into position. We can get it onto the solts in the furnace, and slid back to where the rails need to come back out of the slots (about two inches to go). I've huffed and I've puffed, but to no avail. Is there a trick to this that anyone can share, or is it a matter of continuing to work it until I win?