Slide flippers

[M and E]

Hi Mike,
The issue can affect both the top and the side seals.

Our 310 RL came with factory installed flippers on the side walls of the kitchen slide out.

The condition is more prone to surface on the slide surfaces that are smooth and without a window or something that has to travel under the seal to get the process started.

Thanks Bryan! That makes perfect sense. Had not thought that through before asking!