Interesting. I convinced the guy at Moto Lume to try a CTS-0066 on a bike that has the same signals as our US Teneres.Thunderpig said:it does screw in like the factory and no I didn't use silicone. I thought about sealing it but felt that any leakage would just be a seep around the edge and would drain through the housing drain hole.
He reported back the following:
1. There is no locking mechanism to hold the 7443/7440 socket into the housing.
2. The screw hole doesn't line up well and the screw would have to be installed at an angle for it to work.
3. There was gap similar to yours at the top and inner edges.
Are you sure the ones you used were Clear Alternatives brand?
ac