Yep yep.
Also many Pertwee stories have the unfortunate habits of drawing out a premise that's decent at best across six episodes, which really lowers my appreciation for some of the stories. The worst offenders there, I find is the semi-interconnected story Frontier in Space/Planet of the Daleks, which spans 12 fucking episodes.
That said, there are some real gems in there, like Inferno, The Curse of Peladon, Carnival of Monsters (this is probably Top 5 of Classic Who for me, I love this one) and Invasion of the Dinosaurs.