155 - typical problems?

["Neil Cotie (EED)" <Neil.Cotie@domain.elided>]

Hello everyone,
I'm thinking of getting a 155 for a "normal" car to back up my 74 Bertone.
Specifically I am interested in a post-95 car, the wider version with faster steering.
2.0 16V TS, or a Q4 (was the Q4 ever produced in a post-95 wide track version?)

I would appreciate some pointers as to the usual problem areas to watch out for.  
I've seen some notes (on either alfa155.co.uk or alfa155.com) about cam tensioner wheels that wear out early.  Apparently there is an improved version available in white plastic rather than the original black.

Anything apart from that?

Q4's:  Given the Lancia Delta's reputation for being delicate - how has the Q4 version fared over the years?  It seems that re-sale prices are the same as the 2WD cars.

Thanks,
Neil
Aachen, Germany
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