First time posting after reading through these forums for years, has been an invaluable resource! Recently bought a 2005 R53 Mini with a blown engine with the intent to buy a used engine and swap it in. Ended up buying a used long block with ~100k miles from Redline Autoparts to fit the bill. The listing for the engine stated that the cylinders had consistent compression at ~170-175 psi (saw a video of the test). I've installed everything and I am now at the point where I'm ready to start the car up, but the engine cranks with no start. I have checked fuel pressure (~55 psi) and checked the spark at the plugs with an in-line spark tester. The main red flag is that I am only getting 15-30 psi across all cylinders (dry, still need to do a wet test). The OBD is showing me a few codes: P0341 - Camshaft position sensor A - range/performance problem P0340 - Camshaft position sensor A - circuit malfunction P2303 and P2300 - Ignition Coil Circuit Low - Ignition Coil B & A, respectively. P0456 - EVAP system, very small leak detected. In the process of installing the new engine, I replaced just about everything that you can/should replace. This includes all gaskets (head, valve cover, oil pan, supercharger, water pump, thermostat, etc.) and all sensors (Crank position, Cam position, thermostat, O2 sensor, etc.). Also replaced the battery, timing chain tensioner, spark plugs, coil pack, coil wires, alternator, fuel injectors, radiator, starter motor, put in an LSD, and likely a number of other things I'm forgetting. At this point, I am suspecting a timing issue due to user error when re-installing the cam, timing chain, and tensioner. That will be easy enough to check, but I am honestly nervous to check because I'm worried the timing will be fine and I won't know where to go from here, haha. Given the codes, it also crossed my mind that the new CAM position sensor I installed may have been a dud. I did get the cheapest one I could find on amazon... I have a used OEM sensor from AllMag ordered just in case... Some other possibly relevant things that I did NOT replace with new parts include: the timing chain tensioner, the timing chain itself, the camshaft, the cam sprocket, the fuel pressure regulator, fuel filter....maybe also worth noting that I put on a 15% reduction supercharger pulley and higher volume output injectors... I also had to gently wet sand down (~800-1200 grit) some rust off the cylinder walls (mostly in cly 4) to get it unstuck after it sitting for a while, but it seems unlikely that would have caused an issue... Any thoughts on what else I might check for given this information?