Ring wash from running too rich????

I have heard something about if you have a carb the dumps to much fuel (runs rich) that it can "wash the rings out" of a motor.. I dont exactly know what the phrase "wash the rings out" means exactly, But I guess it would make them not seal as well. I asked this in here since you guys deal with carbs more on the older stangs and I guess this is mostly a carb related problem. Is this a major problem that I should look out for? I have a 750 holley D/P on my 88 and it runs too rich right now, I havent had a chance to tune it right yet. Should I not run it anymore until it is jetted down? Basically I just need more information about this problem.

Thanks
Eric

I want to get the car dyno tuned here soon. But I would like to get it pretty close to jetted right before I take it down.