yet another ktm 790 adventure not starting

so, my 2020 790 rally bike, with over 15k miles, went nearly 13k mile with absolutely no starting issues. since new, the bike was decatted, sc project exhaust, boosterplug and lithium battery installed. around 8-9k miles, i added rottweiler intake. there are many, many other mods.

then inexplicably, the starting problems began. it first happened just before 13k miles. then it worked fine for the next 1600 miles. after that, it happened intermittently. once, after trying to start numerous times, the bike died -all electrical off and the bike wouldn't even turn on. after waiting five mins, i returned and bike promptly started. so strange.

i took the bike for service around 14.5k miles and dealer couldn't replicate issue and reset the adaptation values -something like that. bike mostly started fine, though not like it started before 13k miles. then a few days ago, bike would not start. it would crank and simply not turn over. after numerous attempts, i stopped for fear of damaging something. the next day, i tried and bike started first try. the day after that, she started on first crank. previously, i never waited for fuel pump priming to complete. i read today, that perhaps, it may help to wait. historically, i turn key and hit start button. from today onwards, i'll wait and see if that helps.

i traveled for a few days and returned and again, bike won't start. ktm knows about his problem and won't anything about it. god, please save me from ever buying another ktm.