[jhv48]

If it were me, I would give your dealer one more chance to address your issues completely, in writing. You can live with a broken windshield for a while. If they're not available, they're not available. Personally, I'm on my third windshield. They do break quite often. You can also look into ordering a lexan windshield if you don't want to wait. However, the other issues must be addressed. If he balks or refuses, I would then call Jay at VMS and have a long conversation with him about what your car needs. Then I would ship it to him with the understanding that they address all your concerns and not send the car back until it is 100% done. And that includes test drives and shakedown cruises.
Granted this is going to cost you some extra $$$ but the headaches you're going through right now are not worth trying to fix it yourself or pestering your dealer to fix it for you, since he seems to have no intention of doing so.

Now, once you get your car back, pay the additional repair costs and are enjoying the cobra driving experience, then you can go after the dealer legally for reimbursement of the additional costs you incurred due to their failure to address your new car issues. If you so choose.

Sometimes with these hand built cars, you get a bit of a poorly prepared car. But, I think your concerns are easy to fix and I know many of us have gone through similar problems with our cars when new.
It's not like buying a new vehicle from the dealers stock and driving off into the sunset. These cars are unique and require a couple of years of driving and tinkering before they are bug free. But most of us at least got to drive our cars while we dealt with the fixes. You haven't even been able to do that.
We feel your pain and frustration. Sit down with your dealer first. If he balks, then call Jay, have him do the work. Bite the bullet and then deal with recovering your additional expenses legally (probably through small claims court) while enjoying driving your new BDR.

Just my opinion. We wish you good luck. At least your driving season is year round. Some of these guys get maybe three or four months of the year to drive their cars. Think how pissed you'd be if the summer months were the only time you could drive the car.