agree vspec & will should meet because the little online spat serves no good to either party.
vspec even if you meant no harm but online the questionable quote of 'potential harm' is slanderous ('mala fides'), if i know you, was not your intention to mean as such. But, it comes across of putting tryforce as a vengeful tuner, which he is not. (i can see why any reputable tuner is annoyed or any business owner). This is not right way to settle by throwing precondition that he will/can damage you car, telling him person to person (maybe). Which is why some diplomacy should be shown & as its now being seen as boys throwing tantrums online.
i think both should refrain themselves here. firstly it was your own initiative to approach the tuner for tuning, & it was quite some time back, & if any gentlemanly conduct, the matter should have been dealt with immediately or asap on the tuning then.
I cant buy an apple eat it & several months later ask the fruits seller for a refund. [figuratively speaking] Professionally tryforce is being accommodative & that is honorable given the time frame.
As a paying customer of course i would like good service & terms of service as accorded. as a business owner i would give 100% to customers. i hope there is an amicable solution & not namecalling, i know you guys, you are above this.
peace.
[edited for clarity]
ps i dont know william personally, or as well as some do. the little i know of him, he does try to balance work & customers.