We've never run tankless water heaters, so if your Lex is tankless it's not factory stock. We've looked at the tankless, but don't like the fact that it is propane only. When plugged in we like the idea of using electric.
Just an FYI, if you do have electric you can run electric AND propane at the same time and nearly double the recovery rate.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).