Life of a chainring? New drivetrain advice

My chainring needs replacing after 3000 miles. Is this average wear & tear?
Its a steel 42T chainring that came with a new cheap pair of DOTEK cranks. I think the chanring must have ben fitted slightly off centre as some of the teeth grouped together are worn with rough edges.The chain was replaced at 1500 miles and kept fairly clean.

I am now going to replace the chainring, sprocket and chain. The old miche 15T sprocket doesn't look too bad, but not worth the chance of it buggering my new drivetrain.

I am going to buy an EAI 1/8 sprocket, and KMC Z510HX 1.8 chain. Any pointers on a good steel chainring? I need a 5 spoke 130BCD 3/32 chainring. I would like to increase the number of teeth on the front chainring, but the 130BCD may be a limiting factor. Gear inches to be kept around 74".

Depends on too many factors to say how long a chainring should last: what weather it's ridden in, how clean the chain is kept, how well lubed the chain is kept, how perfect the chainline is, and so on.

It won't be that the chainring was fitted off centre it's just where no crank spiders are perfectly round. My Miche cranks and chainring have a bit that's slightly worn more than others. It's normal.

You might find it difficult to find a 130mm BCD chainring that is 1/8" because 1/8" is traditionally for track, and track cranks are usually 144mm BCD. 3/32" chainring will work with 1/8" chain.

I'd go for this: http://www.sjscycles.co.uk/product.asp?pf_id=11055&src=froogle

Good review on Roadcyclinguk.com.

I fitted the same KMC chain couple of months ago and runs quite sweet and doesn't stretch too much. There are various options for a 130 BCD track chainring like for example especialites TA: not too expensive and always excellent quality.

And Stronglight are 130BCD. I've got a 1/8" 46T that's still going strong, with somewhere in the region of 10,000 miles on the clock, give or take.

you should get a hell of a lot mileage out of a chain ring upgrade it.