Hi just wanted to some advice on tuning, I have used the tuning guide on massive mods and had my gx-5r about a month now (but not much racing due to bad weather)

My idle is set up fine and I have tuned the lsn and hsn, the power from stand still is amazing and have good trail of smoke all the way to top end.
I can do many practise runs and have no problems and then once i finish a full throttle run, it bogs for about a second then its fine. The sound of engine seems like it wants to go faster but unsure why it keeps intermittently bogging from a long run

any ideas, do you think i could be do lean at the top end ?? Thanks