On the previous page post #14, I gave you simple diagnostic procedures that will help determine what is wrong. Three cylinders on one bank are very low compression, this is sometimes due to valves being adjusted too tight, which can also cause excessive crankcase pressures.
If you follow all the test procedures outlined in post #14 you will know wether it is ring or valve related. If it is rings, there is a good possibility changing the oil to conventional with high zinc and using Jerry's BonAmie trick will seat them. BonAmie is a powder non-abrasive cleaner you can find at hardware stores.
Good luck..