Why are my Wavelet Coefficients not maximum when they detect my definition signal

I have created a new wavelet from a part of a signal I want to analyse. I am struggling to understand why the coefficient corresponding to the section I used for wavelet definition appears to be nowhere near the MAX value of all coefficients in the signal. I would have thought that the definition section I used would match very closely.

The code I used is:

F(1,:) = XAcc(SpecStart:SpecEnd);

[Y,X] = pat2cwav(F,'orthconst',3,'continuous');

to generate the wavelet

where XAcc = the signal and SpecStart/SpecEnd delimit the wavelet definition

and:

coeffs = cwt(XAcc,scales,wname);

to generate the coefficients

The coefficient at the part of the signal used in F is 50% of the MAX coefficient for the set.

I must misunderstand coefficients as I am equating a large coefficient as the best match.

Help!