A better poll might have these main options;
A. Manufacturer housing
B. Third party housing
And these secondary options;
1. Housing defect
2. Button o-ring leak due neglect (regular maintenance recommended)
3. Main o-ring leak due neglect (dirty or old o-ring)
4. Complete operator error (closed without seal; ie. string in door)
In my experience, most are 3 & 4 and the housing has little to do with it.
A. Manufacturer housing
B. Third party housing
And these secondary options;
1. Housing defect
2. Button o-ring leak due neglect (regular maintenance recommended)
3. Main o-ring leak due neglect (dirty or old o-ring)
4. Complete operator error (closed without seal; ie. string in door)
In my experience, most are 3 & 4 and the housing has little to do with it.