OK. I will probably do the back flush on the heater and pull that pipe at the same time. Stant specs say the 13 psi cap is 12-16psi range. The dash gauges worked when I drove it last night (never got up to halfway on the temp) but the left blinker stopped flashing inside again?? The right one is working inside. They both work outside. Throttle got stuck on the way home last eve! had me worried. I replaced the cable and sprayed the linkage and throttle cable tube with dry lube. Its another brand like Lock Ease, basically carbon dust in alcohol. Drove it round the block today no probs.
You can use a cable from a bicycle $3 to replace the throttle cable then cut it to fit.