Lightsheer ET

I looked on the forum and found some very helpfull information but I want to ask…
I am a skin type III and have been using the lightsheer ET for a while now and am not very happy with the results.
The settings I have been using are 100 Pulse and 40J. I dont burn with these settings but I will have some minor blistering for about 24 hours.

I am a male treating my forearms, chest and stomach. hair is dark and course.
how long b/w treatments and should I up the pulse/J?

Can you post pictures?