Hi everybody, I'm gonna have another annoying vague question about heat.

It's about an electric Samsung dryer, age unknown (came with the house), probably 5-10 years judging at how scuffed/peeled of it is.

It stopped heating, and the heating element was burned with a broken coil. Replaced it with one ordered on Amazon, kept the original thermostat and thermal fuse that had continuity.

Now dryer heats fine but it is pretty hot to the touch on the side panel while it operates, next to where the heating element is. As in "you can touch it but have to take out your hand after 1 or 2 sec" when it's the hottest.

Question: is this normal? I don't have a reference point, I don't think I've ever touched the side of the dryer during a cycle.

Additional info:
- cleaned all the vent (the flex one and the 10 ft one going out of the house), there was some lint but not really blocked
- temperature measurements without the vent behind the dryer seems fine: about 155°F on high and 120°F on low.
- it seems it was fairly constant during the whole cycle (I thought it was cycling through higher/lower temperature, could be be at 100% the whole time, hence getting too hot?)
- I rewired it the same way but the heating posts and thermal fuse had to clear marking on them and may have been flipped (I took them out to test them), so not sure if these things are reversible

It feels like the heating element isn't isolated enough from the side frame and making it hot by contact through its metal case. I might be paranoid, I'm just wondering if the issue that caused the previous heating element to burn with a broken coil has not been resolved and I'd like to make sur it doesn't burned down the house :)

Thanks for any pointers
Philippe

Additional info (photo): the heating thermostat says L 260 - 50 F: does that mean that it stays on until the temp reach 260°F then shuts off, then start again after it dropped 50°F?
If that's the case, isn't that limit way too high? Since the dryer temperature only runs around 120-150°, aka heating element never turns off?
(or are we talking about the temperature inside the heating element, which is much higher than the exhaust air?)
Sorry, my physics classes go back in the 1990s