Worked does not always mean "repaired".
Most work was customising and internal polishing. In our part of the world internal polishing is similar to the American fetish with figured walnut, not really necessary but people are willing to go the trouble to do it.
Two things were weak in Baikals. The single trigger and the auto ejectors with that silly turning slot to convert from auto to manual. The double trigger, extractor models were and are reliable.
I did refer to customising for which the foundation must be worthwhile. The Baikals are a sound foundation precisly because they were engineered (I use the word in its technical sense) from the start to be inexpensive. They are not cheap copies of designs first made by hand and therefore unsuitable for mass production.
The IZ 27, which is the original poster's intended purchase, has a modfied Browning design, with full cross pin, full width underbolt and some bits not found in the original, like rebounding tumblers (hammers), intercepting safety, fully hardened and chromed internals. These are important features.
The barrels are monobloc and ribs are soft soldered. This is important if you are going to modify the barrels, ie change or remove ribs in custom jobs.
I have posted pics of customised Baikals before. If you do a search you can find them.
No, they will not turn into a Fabbri with custom work, but that is not the point, THe point is to get a superbly balanced, specialised shotgun (most often a woodcock gun) for about 1000 Euro. No other low cost shotgun can rival the Baikal as a foundation for that.
This link
http://www.modernsportsman.com/Feb08Feature2.htm is an article describing the torture testing of Baikals at the Birmingham Proof House. Anyone know of other shotguns, inexpensive or otherwise that can stand the same test? Provide a link.