Hi Naturalme
(Thanks for the reply to my ques, btw!)
I use present tense throughout except for my methodology where I spoke in the past tense about what I actually did. One of my pre submission 'to do' things was to conduct a tense check and I did spot a few inconsistencies and that's probably the most important, ie be consistent. I was a little unsure as a couple of people I was referencing are dead (!!) but I decided to go with 'Jones states' and 'Smith advises...'
One thing, if your examiners didn't mention it, should you be changing things??