Had some starter ginding 3wks ago. It really only did it 1 in 15 times I tried to start it. Then the starts got weeker for a week then just stopped starting all together. Took it to the shop had a new starter and relay installed yesterday. The very first start it grinds again. Thought I just didnt have the clutch all the way in. But it continues to grind( 1 in 10 starts). To top that it ran fine all day yesterday and today then I start it up and it idles really funny(shaking) and it is running like garbage. No pickup. Really shaky and rough. I just bought this thing w/ only 70k less than a month ago(the car of my dreams and my first Z). I dont have the means to do any repairs myself since I live in an apartment w/ street parking only and have very limited tools. But any advice would be helpful.