Wildlifewarrior, I am on the same adventure as you are. On my Guzzler, I have been as high as 21.5", but I typically only get 10". FWIW, it can rise, and lower, for no apparent reason. I believe its ice ****s, but I have no proof. I have been struggling with my artery lines (my main is 1", my arteries are 3/4", and my lats are 5/16"). My arteries keep twisting as the temperatures rise. This often leaves saddles on their side, pulling on the loop from the lat. I have to believe this is having an effect on seals, but I don't hear anything when I put my ear to the saddles. I have come to believe that the theory you will be able to hear a leak from some distance away only applies to High Vac, not Guzzler levels (e.g. 10-15").
Anyway, I have a plan for next season...something you may want to try. I am going to put good shut-off valve at each major intersection. Being able to shut down an entire artery, and then checking to see if vac improves, is a far easier way of isolating problems, IMO. Heck I would put one where each lat meets an artery if I could believe they would be true shut off valves. But even putting such a shut off valve every X feet on your mainline still helps isolate problems.
As far as the ladder goes, I have had ppl here say the Guzzler can, and can't, do a lift like you have described. I desperately need ladders in my bush as its so up and down...the majority slope I have is maybe 2%, and often 0%. With my idea of isolation valves, next year I plan on trying a 5' lift (single star) while having all arteries shut off, so I can see how the Guzzler does.
One thing I have learned, while searching for a solution to the low vac numbers, I have far too often done 2, 3, or 5 things...never learning the effect of any 1 of them. May bad, but its equally bad there are no definite experts on this stuff.
Last edited by NTBugtraq; 04-02-2015 at 08:29 PM.
2017: added shut-off valves at several points on the main line, 66L made, 13L sold
2016: Added Wesfab 7" Filter Press with hand pump, 96L sold
2015: now 216 taps, added low vac (24" hg) to new Sugar Shack (24' x 16') w/400gal storage, 143.15L sold
2014: now 150 taps, added 2 sump pumps to 12'x12' sugar shack w/100gal storage to CDL 18"x5', 2 chamber drop flue, 40L sold
2013: 10 5/16 taps gravity to hose, boiled on BBQ