I had just the opposite happen. The vertical (long) screws kept working loose. I didn't want to over tighten them, so I called Brent at Trophy Ridge to see if it was ok to put Loc-Tite or something similar on them. He explained that I probably had either a stripped screw or a stripped thread in the launcher arm bracket. I ordered a repair kit (screws, launcher arm, springs and plastic tubes) from TR for $5.00. Brent threw in a replacement launcher arm bracket for free. I don't use credit cards and I told Brent I would have to send either a check or money-order. Sent a check on a Thursday expecting a wait of a couple of weeks for my check to clear, but I had my repair kit the following Monday. My check wasn't cashed until 6 days later. Great customer service!