Help Guys Quick,-2 Issues

[CHEVROLADE]

Ok Guys This Is Weird But This Morning I Dropped Off My Grill And Hood At My Local Painter To Get Painted And Problems Started.
So It Was Like 40 Degrees With No Hood And Grill And Forced Induction ,i Had To Get On It,it Ran Like A Beast,but Then I Noticed While Cruising With ,just Coasting(not On The Gas) The Rpms Start Jumping From 500 To 700 Like It Wants To Shut Off And W/b Is Lean -till I Get On Gas,but Its Constantly Lean Just Coasting,sounds Like Its Cammed-ha
Now The Headache-in Drive My Tranny Shifts From First Gear To Third,no Second Gear!!so I Manually Shift It From First To Second ,it Just Stays In First.but it will get 3rd and fourth.
I Have A Tranny Cooler,2nd Gear Servo Just Put In Not To Long Ago.im even thinking of putting the stock servo to see,but who knows it was running fine before.
I Dont Know Wtf It Is,but I Have A Big Headache.its wierd ,it started when i took the front end off-lol
Any Suggestions Would Be Appreciated-

Thanks-zach

might have to give finish line a call,what do yall think?