Polk Monitor 70 Series 1 Tweeters Almost Silent

Word. Any input on the gauge of wire required if I need to extend any capacitor or resistor leads? Also, does 1mm heat shrink sound right for capacitor and resistor leads? I am sure I'll have more questions soon. Thanks for all the input @FestYboy, @pitdogg2, and @VR3.

Since I've been waiting for my capacitors and resistors to arrive I've been doing more reading and watching. I've come across multiple threads and videos discussing capacitor polarity and quite specifically film capacitors. As I understand it, most if not all film capacitors are non polar. However there will be a lead connected to the outer foil of the capacitor. Apparently in some instances it can absolutely matter how you solder in the film capacitor and apparently in many instances it may not matter at all. I do not have any of the testing equipment used or mentioned in may of the videos and forum threads I've come across. I have some questions concerning this matter.

Does anyone know if/how sonicap capacitors denote the outside foil lead and if it is accurate?

Without having an oscilloscope and other testing equipment, is there a quick and dirty albeit effective way to determine which lead is connected to the outside foil? Some alternatives to the oscilloscope were using guitar amplifiers and some cables and alligator clips. I don't have a guitar amp but I do have some crown amps. Would an RCA cable and some alligator clips to one of the crown amp's input work about as well for a quick and dirty test?

If I can determine the outside foil lead, how will I know which way to solder it onto the board? I don't have the old capacitors removed so I cannot see if the board has a clear indication. I read something about the outside foil lead should go to the lower impedance.

For my replacement capacitors, I chose http://www.soniccraft.com/product_info.php/gen-sonicap-82-uf-200vdc-p-447 and http://www.soniccraft.com/product_info.php/gen-sonicap-10-uf-200vdc-p-450

Fair enough. It's quite easy to get a little OCD and carried away with all the reading one can do. While I am still waiting for parts, can anyone chime in with some recommendations for solder, flux, and what temperature I should be using? Please keep in mind I am exceptionally inexperienced with soldering. I've been practicing on some old broken stuff but I have some work to do, especially when it comes to de-soldering.