Hey again Andy, Hows it going? Anyway as to the help you need. 1. (The Grind) Just leave it, It will were down but many riders on here use a grind for braking in the wet. 2. (Pads) Pads as you have a harsh gind on there, Go for the safe option of koxx bloxx browns. 3. (Tyres) They will be fine for a beginer, but when they get more worn i suggest maxxis creepy crawlers. 4. (Pressure) Most people on here run our tyres sligtly flater than normal. Around 20-25psi for rear would be reet. 5. Here You will see more videos at the side, They all have just a biker with a white background mate. Cheers Aidan