I have a 3t Exploro which I got second hand. From day one of owning it we've not got on. It's cursed, one problem after another! The last couple of rides the seat post has started slipping, it's got that stupid 'wedge' thingie which clearly doesn't work properly. So today was tightening the bolt and the paint on the top tube starts to splinter but the seat post is still not tight. I've attached a photo and haven't touched anything since the 'incident'. Is there anyone out there who can fix this, I'm really tempted to sell it for parts or maybe just put it out for recycling.