This morning I did a heat up test and did a video once it was fully warmed up & running... and no evidence of slowing her down.
Wow, Rich! That injection mold heater really worked out for you! And here I am fiddle-farting around with cartridge heaters...
If I do another vertical boiler engine that needs a heater, that's definitely the first method to try. It's strange well it worked, even with the incidental contact between the outside of the heater and inside of the boiler.
Thanks for posting the video.
Paula