Vapor: you can also for one or two pastes (eg. some very thick or very fluid one) experiment with different aplying methods for effectiveness (no-no, not for all of pastes, as it will grow needed time/work for test to complete to non-acceptable ammount) - eg. using credit card or finger covered with some plastic bag to spread paste, or good-old single rice grain size blob in center, or one bigger in center and four smaller in IHS corners, or stripe of paste in center, or using few drops of acetone to make thick paste like TX3 more easily aplyable, or using some heatgun alike for same purpose, and whatever else popular method exists ). Hmm, and for this mentioned TX3 imho it would be interesting to test vendor's claims that it's effectiveness doesn't differ much from thickness of aplied layer. Pitty though that another claim i'd like to be tested/find out about takes too long (one about liquid ultra being less diffusing into surfaces then liquid pro), - i doubt required half a year-year will be good fit for reasonable test finish timeframe .