Im getting another 2 opinions and he's encouraged me to do so. He's speaking to the first himself
If the engine is that bad then if it does go bang I'm in the same situation as I am now so that's an option I'm considering
Iv seen rb25s go for 800-1500 but the thing is a new engine won't have a guaranteed history. If I do go for a new engine il be going for something different not another rb25. I like being different. But I'm hoping I have some time before I decide