Just to give a update, I have talked with a guy on ebay with the store name optisparksolution1 which I believe in other LT1 forums people recommend him to rebuild the Opti. From what I read, he replaces the bearing which was the issue with my factory unit. He will also clean the unit and the optical sensor and put it back together with a msd cap and rotor. After that he will test the unit with a o scope and supply voltage to the optical sensor and spin the unit while the unit sits in a special oven so he can check the health of the sensor in heat. One of the best things is that he uses a special coating to seal the distributor and to repel oil and coolant so it doesn't take out the distributor. Once it passes, he will send the unit back with a new ventilation kit with filters to replace the old one. From what it says on his description, he will refund the money if he can't fix it I believe. Also, he will refurbish the unit free afterwards for as long as you own the LT1. What I found interesting is that I told him that I got a spectra unit and swapped the sensors out and he informed me that those units leak through the bearing because the seal is not good which will allow oil to enter the opti. I have a funny feeling that is what is happening to mine because I noticed that a vent hose was off and seem to have some oil. What makes it worse is that this is a new engine and didn't see oil trails on the timing cover. I'm hoping that after I send this in, he will tell me everything is good. Once I get it back and install it and it still acts up, I will replace the harness. If it still acts up then I guess I will rewire from where the harness connect to the connector for the pcm and go all the way back to the pcm. But for right now, I'm willing to do this just to make sure the sensor is working and go from there before I decide to spend the money to convert to the ls ignition