Concur with Spitoon, rice.and.pea, keep asking questions.
To lead on from Spitoon's post, I think some OJTIs forget just how condensed the pre-unit training has become. The rounding off of one's ATC/aviation knowledge, which used to
begin during the time before one's posting (aerodrome visit to Bournemouth, flying training, OJT, BA course, fam flights etc), only begins now once the trainee has arrived at the unit, and at that point validation training looms large and that through necessity becomes the priority. Sometimes, it seems this only begins after validation!