I have no doubt that someone who had done the Timney replacement a few times could do this in 20-minutes, but I didn't have all the tools I needed to do it "properly," most notably a punch and hammer to knock out the silver pin above the trigger. That sucker is really in there, vs. the relatively loose fit of the black hammer and trigger pins.
However, the directions were spot on, thanks Jon, and the trigger replacement was accomplished in a little over an hour. Not bad.
The HHA Speed Dial went on easily by comparison and it's made pretty darned square because I remounted the scope and the crossbow was right on the money at 20yards.
So I did the 20/60 yard shot thing, grabbed Tape #23 and slapped her on.
This got me perfect zero out to 80 yards.
With a Sharpie I soon found and marked where 90 and 100 yards fell on the dial and was shooting for groups at 100.
On the second try I landed a 3-shot 2-inch group.
I also found that even the lightest zepher of a breeze would play havoc with the grouping at 100.
So... While the Tac15i appears to have almost the same inherent accuracy as my Encore 308, it is far, far more sensitive to wind drift.
Still, it's a remarkable machine, and really turns heads at the range.