I'll post it up here so others who haven't seen it and may be experiencing similar problems can try and fix it.
As per 7th Floor:
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Thanks for contacting 7th Floor. I will provide you instructions on how to keep the heater element in place, but keep in mind, you could pull or cross wires which would render the unit broken and you would have to send it to us for repairs. It sounds like you need to keep the heater element in place and this could fix all your problems. Pull the heating element up gently and hold the cap and shim down, to prevent the cap and shim from being pulled out. On the side of the heating element, close to the bottom as it is coming out of the cap, you will see the letters "STD-". Pull the heating element out til you see the dash and then slightly twist. Slightly twist. This should hold the heating element in place.
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Here's a pic of how it should look after adjustment: