I was wondering whether anyone recommends any shops near lancaster county that can look at my engine for some general maintenance. Or if anyone is familiar with 420a's that can help me with my engine? Thanks.

Go to pepboys or autozone and buy a haynes repair/maintence manual, they're $20 and tell you everything you need to know. I highly recommend having one.

i would definatly recommend the haynes manual. its helped me with a lot