Thanks for doing these videos, I have a XS650 with a seized engine so your step by step will be really useful. Also how refreshing to have some straight speaking 👍
You made a nice start to porting. Porting is done in steps. each step leaves a nicer finish than the previous one 1st step you did pretty good. only improvement would be to suggest a ball type carbide for doing a backside radius of a corner. 2nd step would be to use 80 grit sandpaper such as a small flap wheel or make a home made roll on a 1/4" bolt with a slot cut in it. 3rd step is scotch brite on the 1/4" bolt. 4 step is 200 grit sandpaper on the 1/4" bolt. Each step you are improving your work from the previous step. Last step might be to sandblast your intake port lightly to keep fuel from pooling in the bottom of the port. also between the head and the intake if the head port is larger than the intake port, do not port match on the bottom of the port (port floor as in rectangle port) leave the step there as in up to 1/8" If you want to practice this grab something from a engine machinists junk pile.
