Kit did not include a plastic washer (see instructions) that really should have been included. It was cheap but still, I had to go and buy at Lowes. And kit is pretty expensive, not much cheaper than the entire vac pan. Shipping took the max allowable time by ground from CA. Once installed it worked well. I did not have to replace the spring and contact.
Suggest using USPS to ship your products. 8.99 for the item I bought could have been shipped for a lot less.