Hagon progressives were they fitted correctly/ handling nightmares

[Graham53]

I would contact Hagon and ask if there are any specific recommendations for fitting their springs to the Fazer and then confirm with the workshop whether what they have don is correct. I know that Hyperpro recommend a 170mm air gap with their springs which is less oil than the Yamaha recommended 140mm air gap. If the Hagon springs also require less oil but the workshop have refilled to what Yamaha specify this could explain why the suspension doesn't feel right.

Just checked Hagons are 150mm gap. Not having the most experience with working on forks ( none) can I undo the tops to check the springs are in right way and measure oil gap without dismantling them entirely ?