Your tekki shodan is quite different from the ISSHINRYU naifanchi kata though from the same source.

But in my experience you stances are solid and I feel the upper body performance is a little rushed.

At times you move onto the next technique before I feel the last technique is completed. That may be a signature of your system but I'd prefer the full strike completed before moving onto the next.

hope that helps,
victor smith bushi no te isshinryu offering free instruction for 30 years