So the dryer isn't heating. I've taken the front off and tested both fuses and they're showing continuity. As is the heating element. (all continuity tests at room temp)

There are 2 thermostats, one on the element, and one on the exhaust.
The one on the element is this one: PICTURE

With this one, the pins don't match up to any video or how-to's I've seen so where should I be checking for continuity?
I get continuity across 2-4 only and not any other combination.
It also has a little rattle when I shake it.

the exhaust one: PICTURE
This is 3 pin, and again, not sure where I should be checking for continuity. I only get continuity across the two lower pins. (These two pins are at the same height/tier and one on the next tier up. It's hard to see in the picture as it's from above, but if you see the way the first thermostat has two 'tiers' then you get the idea).

This one also rattles. (that can't be good, right?)

We must have done a boat load of laundry in a short time previous because the lint trap was full and I empty it fairly regularly.

All help very, very, VERY much appreciated. :)

Martin.