New owner needs advice on upgrades

[TypeA]

Well I have to admit its a concern for me and I have no one to blame but myself. I might luck out but after reading the replacement procedures I realized I am hearing the slight mild rattle when I first start my engine. Its my first Porsche and not only did this issue not come up in my research (again, my fault) but I also didnt know it was unusual or indicated a problem. Its pretty mild and the engine sounds and runs so good at all others times I (again rookie) wrote it off as a quirk of no consequence. Ive not heard it while driving as the guide suggests is also possible. I did buy the car with the understanding that if my mechanic found any major mechanical issues they would be corrected and the lot does have a long and very good reputation. Since this is such a critical issue I will be bringing it in to my mechanic sooner rather than later. An interesting side note, I did learn from that guide that 2500 rpm is not recommended and considered chugging, my last sports car was nowhere near this caliber. Interesting that I am learning the car from in front of my computer and you great folks, go figure. It will be interesting to see what my mechanic has to say but the procedures to replace it are in depth. I read them all and while the guide is good its a pretty heavy duty thing to do myself.