Redcat HSP Throttle Linkage Adjustment Nitro High Idle Hesitation no wide open throttle WOT RC car

I got this car a few weeks ago I'm I trying solve some the kinks. My car from factory had a night idle. To fix the high idle put some tension on the rear spring. Another issue I was having was hesitation and the throttle blade would not open all the preventing wide open throttle. The fix that make sure you don't have any slack in your forward lock nut.

Car in this video
https://www.amazon.com/gp/product/B01E78W1LQ/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B01E78W1LQ&linkId=3c00e0c29d4aa8498e20904734ad2d6d