I recently purchased a Manfrotto 128 RC QR Micro fluid head and the Opticron 77 mm scope. They are on a Manfrotto tripod. I attached the scope with to the 200PL quick release plate and used the locking screw. The plate underneath says lens 1 and lens 2. I had it attached with the lens 2 arrow pointing towards the lens. The scope has loosed up twice on the plate so I now switched it the orientation of the plate so the lens 1 arrow is facing towards the lens of the scope and moved the locking pin. Do you think this will fix the problem of the scope loosening? Or could there be some other problem? Would appreciate any advice.