Yes.
One difference between block design and visual puzzles is that actual blocks and physical assembly are involved in BD, while VP is multiple choice (point to the pictures of pieces that could be put together mentally to make the puzzle), and can be answered either by pointing or verbally. Also, for most children, speed has more impact on BD.
Similarly, symbol search, while it does require pencil marks, just requires a slash or tally mark (or really, any distinguishable mark). Coding requires drawing specific forms.
For both pairs of subtests, one task is much more heavily loaded for fine motor skills, including coordination, motor planning, and visual-motor integration.
In addition to OT and memory, I would consider academic achievement testing, specifically in the area of writing--really, though, beginning with a more comprehensive evaluation might be in order, so that there is data on a wider range of possibilities, rather than starting from narrow confirmation of a hypothesis.
