Date: 12/31/1969 Views: 3027
Date: 12/31/1969 Views: 4820
Date: 05/30/2005 Views: 3103
Date: 08/23/2023 Views: 196798
The manual doesn't say anything about shims or adjusting the length of the bolts, but they appear to bottom out in the holes before they seat the mount. Will have to contact Airmaster for instructions.