Hi,
Have you spoken to the girl in accounts at Gas Gas uk? She helped road registered my txt 2 weeks ago. She confirmed import and dating and sent a copy to DVLA and 1 to me. I sent form, dating letter, insurance,personal identity (photo copy of passport and licence) and money for registration and tax. Came back a week later tax disc, next day log book. I was surprised at speed. She's clued up on all the goings on involved.