Beautiful Triton there Madass.
The frame in the xs 650 link looks a little scary to me. The coped ends of the tubing look to be very crudely done with an angle grinder as near as I can tell from the photo, which is not a close up. There appears to be big gaps here, which presumably will get filled with weld. This is not a way to make a strong weld, especially if the plan is to tig weld,as is now the norm. Might get away with it on the 1/8"thick mild steel frame, but it would be a real mess to deal with in thin wall chrome moly.
Looks like the tacks are done in mig. A customer of mine brings me Ss hotrod exhaust systems for welding. He does the fitting and tacking. He was doing the tacks in mig which made it really difficult. Even tho his fits were good, he had these big carbunkles of mig weld everywhere to try to blend away. I now have him tacking them in tig, much better, just tiny little tacks that disappear into the main weld.
Im all for do it yourself, but the welds and fits are pretty important to life and limb.
Glen