I've got the Rotax 912 supplied CHT senders already on the engine and haven't purchased any EGT probes yet. I've also got a Westach quad gauge which only monitors one CHT and one EGT at a time. Any recommendations on which cylinder I should monitor, or should I get a selector switch and monitor them all? Spruce has these switches and I could get one for all the CHT senders and another one for all the EGT senders. Also, what location in an exhaust pipe is best on the 912 for mounting an EGT probe?