missing and idle probs

Hi, my 06sd was missing and had an erratic idle which would stall and then pick up when h/bars are turned full lock left, 2 error codes came up (tilt sensor + #2 coil) shop has tried another coil to no effect and is now just chasing $$$ looking thru wiring, last xmas a bolt or something from starter clutch demolished the stator & flywheel which a diff dealer ignored my pleas on starting prob (ie wouldnt start 1st time and massive clunk) $2600nzd prob fixed , havnt done many km`s since then tho the bike has been tempermental in starting (ie flat battery symptom) new battery was installed when this was happening and was random as during a ride it was luck of the draw if it turned over, my sd is standard , when new battery was installed i cleaned all the plugs by battery box, any advice/ ideas most appreciated, cheers Daz

If you live near me I can hook tune ecu up to see whats goung on, could be a number of problems.
What stealer are you using?

Sounds a likely case of the big grey plug has moisture in it.
Take the right side tank spoiler off, you see a big grey plug in front of the coolant overflow bottle ont ehframe behind and on top of the radiator.
Take appart, (push in the clips with a screw driver, clean properly with contact cleaner and compressed air and then lube/pack with dielectric grease.
let us know if this fixes it.