I will probably go back to the Rene 900 ACE when they get the new front end and new skis. The problem with the non turbo ACE is that you can't get an upgraded model with the better shocks.
On my 900's I had tried the coupler blocks on #;s 3 and 4 but the rear suspension became miserably harsh riding.
On the 600 I tried cranking the rear springs higher, then the front springs tighter, both tighter, front track spring loose. But I don't think I did try going any higher than #2 on the couplers on the 600. You are right, that may have solved the push and the 600 rear suspension was so much softer it may have been fine with the couplers cranked up.
mike
(Anyone else with reviews on their 2024 sleds?)