The Dabbaba is not a counterexample as it has an even SOLL, namely 4, and my conjecture specificed odd SOLLs. The point about the pieces with SOLL 49 is that their leaps, though the same length, are to different destination cells relative to a starting cell. The following diagram shows this. Routes c and d lead to the same destinations but route b leads to a different one where:
@=statring cell
#=destination cell
a=intersection of b and c
b=7 orthogonal steps
c=1 orthogonal followed by 4 diagonal
d=4 diagonal folloewd by 1 orthogonal
___ ___ ___ ___ ___
/ . \___/ . \___/ . \___/ . \___/ # \
\___/ . \___/ . \___/ # \___/ . \___/
/ . \___/ . \___/ d \___/ . \___/ b \
\___/ . \___/ . \___/ . \___/ . \___/
/ . \___/ . \___/ . \___/ c \___/ b \
\___/ . \___/ . \___/ d \___/ . \___/
/ . \___/ . \___/ . \___/ . \___/ b \
\___/ # \___/ . \___/ . \___/ c \___/
/ . \___/ b \___/ . \___/ d \___/ b \
\___/ . \___/ b \___/ . \___/ . \___/
/ . \___/ . \___/ b \___/ . \___/ a \
\___/ . \___/ . \___/ b \___/ d \___/
/ # \___/ c \___/ c \___/ a \___/ a \
\___/ . \___/ . \___/ . \___/ a \___/
/ d \___/ d \___/ d \___/ d \___/ @ \
\___/ . \___/ . \___/ . \___/ . \___/
@=statring cell
#=destination cell
a=intersection of b and c
b=7 orthogonal steps
c=1 orthogonal followed by 4 diagonal
d=4 diagonal folloewd by 1 orthogonal