Second Blueprint 408 issues

So I guess my options at this point is to either repair this one, if it can be repaired. Or put the strong running 340 that I took out back in. Or I can just take the 408 and build it to my liking since I am not sending it back to them.

I just spoke to the folks at blue print and they want the motor back but I am not willing to do this. I ran into someone out here that had his 408 from blue print have issues and they paid to have it repaired in the field.

I get that issues happen on anything mechanical, but for it to happen twice is one time to many.

What do you all recommend?