RyFly05, looks like you are getting good advice.
For what it'* worth, here is my 2 cents too: I doubt that your problem will be related to anything that "top end cleaning" (combustion chambers & valves) would help. UNLESS, you have gummy deposits on the valve stems, such as would be caused by a slow coolant leak into the intake system. I did have that exact thing happen to mine, during the intake failure (-other threads) I did the "top end cleaning" as well as oil detergent treatment, and the combination of the two fixed mine.
BUT, if you are not loosing any coolant, then my guess is that one of your hydraulic lifters has a higher "bleed down rate" than the others. (-especially since it occurs after warm-up). In my mind the most likely cause is that the check valve assembly within that lifter is worn. Another possibility could be that the lifter mechanism is a little too dirty or gummy. If the later is the case, then treatment with a "high detergent" product may help. There are a lot of such products out there on the "automotive snake oil shelfs." (I have no experience with how well transmission fluid works, but I have heard of it being used)
If cleaning tricks don't work, then you will probably find that you will have to "fortify" the viscosity of your oil. Higher weight oil may help, but a "viscosity index improver" will be far more effective.