I was up and down part of the night so was out playing some more with the top and it ultimately become apparent that the SlingShot is not symmetrical from side to side, (I really should have realized this when MeanSling sent two differently dimensioned drivers side front tubes, DUH!) The instructions state to use one tube and if there is over a 3/4" difference in height from the passenger tube, install the alternate tube. We only had about a 5/8" difference so I left the original tube in place where I was finding that to level the top from side to side I was almost all the way down in the adjusting slots on the driver's side, and just the opposite on the passenger side, limiting my vertical adjustment options. Well, I finally decided to try changing out the driver's side to the alternate tube and now WALLA, I use the same holes on both sides now.
Added note, and another DUH, if you are going to adjust the top to an ADJUSTABLE windshield, it will also help greatly if you make sure that the windshield is level!
Bill
yes, I have found that regardless of year the driver's side a-arm height can vary as much as an inch when installed. The mirror mounts do not have a critical weld measurement and therefore can be off a good bit from the passenger side. Interestingly the passenger side has always been found to be that same every time. This issue is not reported by other tops because of the way they are mounted but does explain why some forcing of frames into position is required.
The MeanSling simple centralized rear latch system requires the top to be balanced left to right so that the top is level when viewed from behind. That is the long answer as to why the top is supplied with 2 driver's side A-Arms. This was one of the most frustrating part of development. Testing and confirming the average A-Arm heights and having enough adjustment to allow all SlingShots to be fitted. Early 2015-2016 tend to suffer more than later models. My personal installations confirms that 75% of all SlingShots need the shorter arm.