I don't know if its any help but I just installed those same mounts on my t-top and I thru-bolted a 1/4" aluminum plate above and below the t-top using the outrigger bolts. I also had to spend some time fabricating wedges out of starboard so that the outriggers were more or less perfectly vertical when in the upright mode to compensate for the arch in the t-top. The shim thickness was different from port to stbd since the t-top had variations when it was fabricated. Then one of them had more pitch fore/aft then the other so I dismantled the port side and shaved about 1/8" off the aft shim. Now they are parallel to each other when upright and also look uniform when deployed. Honestly, It was a friggin PIA to do it right.
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