im out of ideas.. really weird problem

Hey guys, this is my first post here so ill give you a little background and then my problem so please bare with me for a bit. Here goes, I am a 4th generation truck driver, I've been around it from every way for my entire life. Last year I decided to go along with the family buisness so I got my CDL permit. I went OTR training with my brother who has been driving for 12 years. As soon as I could, I scheduled my CDL test, I had to wait almost 8 months for a spot to open up so I pretty much drove team with my brother until then. I passed my test with flying colors and was on my way to driving in the one open truck my dad and brothers small company had for me. Two days after I got my CDLs, I was informed that their insurance wouldn't cover me because I was new and they were gonna try to switch insurance companies and see if that would make a difference. Long story short, that didn't work and I was screwed. Fast forward a little and I finally get a job driving a roll off truck for a scrapyard. I was OTR with that job but it wasn't a big truck, it was a standard roll off straight truck so that OTR experience is verifiable but doesn't count for anything. I was let go from that job because I called them from Augusta Georgia and told them that I was at a shop, and wasn't moving that truck another foot until it was fixed (broken studs on my right steer tire) started with 1 and they said wait a few days, 3 were gone by the time I said this was enough. They just kept coming off, anyway that's beside the point, the following Monday, I go in and am getting ready to head to Tennessee and they let me go for how I handled it. The week after that I got a job driving a dump truck, that job went great and I was there until the job was complete. They want me back but the economy being what it is, construction isn't really sky rocketing. Now to my main problem, I have almost 8 months of driving experience on my permit, 6 months experience on my CDLs but never went to school, I got OTR on the job training but recently I have found out that literally counts for nothing. As far as insurance companies are concerned, I have NO experience with a big truck and only 6 months otherwise. I can't get a school to do anything because I already have my credentials and a refresher course is $1500.00 that I don't have, companies that send you to school won't do anything because they all say the same thing, "you already have your CDLs, why would we send you to school to get them?" I just need to get the experience and noone can give me a shot to prove myself because truck driving is a huge insurance game now. Bottom line is how do I get experience on my driving record when noone will hire me and how do I get someone hire me without experience? I'm out of ideas and need some help or advice or anything you guys have to offer.