Heating Element

Have replaced the element multiple times since I have owned this unit. Element went out just last week w a break in coil. Replaced both fuses and heat element was still under 90day warranty, power came back and we used it a couple of times last nite. Went to use it this morning and no power and the coil has multiple breaks in it. Did notice when I replaced the part when I looked in the drum where the hot air blows out it was red hot in that area. Any ideas on how to fix this. Have cleaned all vents out at a loss on why this is happening

Went to local parts supplier that I got the heating element from. They have told me it is a short somewhere in the dryer causing the heating element to overheat. I have opened the dryer up and vacuumed out as much of the lint I can inside the unit. Did notice alot of lint around where the elec cord is connected to the dryer but no blackish color to it. Am wondering if anyone has had this problem and where this short could possibly be?