07 cm870 metering/timing actuators/soleniods

[Cumminsher13]

Bought my truck around 2 years ago since then I’ve noticed that whenever it sits over the weekend or longer and I come and drive it it drives like a dream nice and smooth and shifts like butter…then the other days it runs like complete crap…shakey,bouncy and have trouble shifting and seems like it blows more smoke than normal …was going to start throwing parts at it because I just couldn’t figure out what it is…motor mounts? Air leveling valve? Ride height? Then a buddy told me to check out the fuel metering/timing actuators/solenoids when I noticed that the timing ones have two have different numbers stamped on the front…. The first metering one has a number on it and the last one has no number stamped on it….would this be a problem? Do they vary from year to year? Any differences on the insides? Would they change with more or less hp? And help appreciated mine is a 2007 530hp