If the TPS adjustment does not fix the problem look at the EGR valve. Had periodic missing and rough idle. Chased the plug wires, spark plugs, rotor, dist. cap, etc, to no avail.
Finally found a stuck/sticking EGR operator stem. Cleaned carbon off of the valve stem to get it running, then replaced it with new. Only two bolts and a vacuum line to check the operation. Once off of the engine, push the stem in and out to see if it operates freely.
Now the unit runs great!
Travel Supreme: 36' 5er, 3 slides as lake cabin w/all the lake-side toys.