MWarby,
Why don't you contact Experion and see what they have to say about you? Then at least you would be prepared to give answers at interview.
Just answer the forms as accuratly as you can but don't answer questions that they do not ask if you follow what I mean.
We had a Nav Stude who was in severe financial difficulties and was assigned a mentor during IOT. He was straightened out (oh yeah) and commissioned. He then came to us. Next thing we knew he had an expensive new car on HP, 3rd Party Insurance, pranged, debt etc. Took us ages to persuade Innsworth to terminate his commission.
So, as A_A says, don't worry.