plastic bits do that...push it in and just wrap a lil bit of tape round it
Hooves, well nothing lasts forever. If you are a beginner and as you say you are at skewl Ill guess dont weigh too much then you should not have worn them down very much. If it is just the 'cross hatch' patern, well dont worry. If more, take a photo and post here or send to projump and ask advice.
Taking to skewl? WOW that really good if they r letting you , tho Im not to sure about using them with a springboard
Where abouts are you? I suspect a few people may wish to transfer to your school
And there maybe some others in your area