You didn't mention what bandsaw you are using but I'll share my experience with my bandsaw. I went through a difficult process tuning my Jet 14" bandsaw (and most of the cast iron 14" bandsaws have the same design) after following all the steps from Snodgrass and other online videos. As it turns out, there is a cast component in the tension mechanism of these bandsaw that will bend over time. Once bent, getting good performance becomes almost impossible as you can no longer apply proper tension to the blade. Best tool upgrade I have made was to contact Iturra Designs and order his upgraded hinge mechanism and improved spring. It made a world of difference and the performance after the upgrade was incredible. I could cut 1/8" veneers through 6-8" oak with very good results and that would have been impossible before the upgrade. Take the time to speak to Lou Iturra - he is a wealth of information and will steer you in the right direction based on your saw. I also bought the carter quick release arm from him and that made the band much quicker for tensioning. Hope that helps.Looking for someone in the Raleigh area that can help with making a bandsaw run effectively.
Side note, I just sold the Jet bandsaw this week as I found a great deal on a Laguna . . . When the gentleman picked up the saw he told me it would be in Mexico within the next week. Apparently machinery is in high demand in mexico and would be worth 4-5x what they are paying in the US. This guy had a truck running down to mexico every 3-4 weeks.