#1
1) If a preamp tube's pins are slightly bent, but still fit properly into their slot, does it impact the tube's performance in any way?

2) Is there a need to clean out tube sockets? If so, how?

Epiphone G-400
GFS Crunchy PAF - Bridge

DigiTech Bad Monkey
iSP Decimator

New Amp Fund: Depleted
#2
1) No

2) Not sure, but don't go pokin around in there unless you know what you're doin.
Baron K2 SE 120
MILLS 4x12 Afterburner
Eventide TimeFactor Delays
ISP Pro Rack G Noise Suppressor
BKP Warpig pickups