Hi everyone! Very long time lurker on this forum, but for some reason I haven't joined. I'll be starting my first amp build soon, a 5f1. Parts + chassis are coming from Tube Audio Supply, transformers and speaker from Weber, cabinet from eBay, and I purchased some nicer filter caps from AES. I'll be using the latest RR layout. I have a few initial questions, primarily safety related but others as well. I have been building pedals and doing a variety of other electronics projects (RasPi, Arduino, some home elec) for over 10 years. This, however, will be my first tube amp and I'm admittedly a bit apprehensive about high voltage. I've read RRs safety guide and I feel pretty confident in how to stay safe, but a couple questions: Bleeder Resistor — I've read that adding a bleeder resistor on the filter caps will decrease the time required to rid those caps of high voltage (with that caveat that you still must always verify with the multimeter). I believe I just need to add a 220kish 2W resistor from the first filter cap to ground. Is wiring that resistor as simple as placing it in parallel to C3 in Rob's layout? Can it share the same turrets? Basic safety — Once the filter caps are drained and the amp unplugged, are there any remaining risks inside of the amp? My basic electronics knowledge says no, but no harm (literally) in verifying! Reducing hum — In a couple of D-lab's videos, he's mentioned that moving the speaker jack to between the power and rectifier tubes can reduce hum. Would it be prudent to just do this off the bat rather than waiting to see if any hum is present? I'm planning to add an NFB removal switch and I could repurpose the original hole for that. In addition, would it be wise to use shielded wire for particular connections in the amp, like input and output jacks? Bias — Also from D-lab's videos, he mention that 470R often isn't high enough to bias a 5f1 connected to the modern electrical grid. Rather than wiring this in from the start, would it be better to omit it and start with alligator clips and potential values? I've never worked with turretboard before, so maybe it's easy enough to replace components that it's better to start with something present. I hate hate hate desoldering from PCBs and stripboard. That's it for now...as if that wasn't a lot!