First of all I would get your primary machined a little for over-drive and balanced after at cv-tech in Quebec
So I think you have a 1.86 gear ratio. That works well with your 1.6" track and your 50/50 riding style. The highest I would go would be 1.79 ratio for what you have and want
Since you do 50/50 riding. I would invest in a set of adjustable weights in primary as you can change easily in different terrain and temps. A good Canadian company is dalton industries for those weights (no us money exchange or duty)
Get your primary back in and check for alignment (at dealer)
Let secondary float 0.100-0.120" with no less then a 0.100" thick washer behind secondary
If you get adjustable weights, start with around 70 grams. 0.015" belt to sheave with new gates belt, try a 110/290 or 120/300 primary spring
Your secondary,
A full progressive is best for your riding style and will give you instant back shift. Go with a 48/42 full progressive helix and a 140/240
The 1.86 gear ratio you have or no higher then 1.79 ratio
Get tps checked, valves sync'd and any other trouble codes at your dealer
Warm up track with sled raised, track should sag 1/2" from sliders at 16" from center of back idlers up
Make sure all air box and throttle bodies are sealed nicely
Your rider sag in should be at least 4-5 " at back
Try some of this