fixed parameter handling that was buggy for some WebUI when run and not setting all the params

K-ShakeTune/K-SnT_axis.cfg

@@ -13,7 +13,7 @@ gcode:
     {% set scv = params.SCV|default(None) %}
     {% set max_sm = params.MAX_SMOOTHING|default(None) %}
     {% set keep_results = params.KEEP_N_RESULTS|default(3)|int %}
-    {% set keep_csv = params.KEEP_CSV|default(True) %}
+    {% set keep_csv = params.KEEP_CSV|default(0)|int %}
 
     {% set X, Y = False, False %}
 
@@ -27,10 +27,14 @@ gcode:
         { action_raise_error("AXIS selection invalid. Should be either all, x or y!") }
     {% endif %}
 
-    {% if scv is none %}
+    {% if scv is none or scv == "" %}
         {% set scv = printer.toolhead.square_corner_velocity %}
     {% endif %}
 
+    {% if max_sm == "" %}
+        {% set max_sm = none %}
+    {% endif %}
+
     {% if X %}
         TEST_RESONANCES AXIS=X OUTPUT=raw_data NAME=x FREQ_START={min_freq} FREQ_END={max_freq} HZ_PER_SEC={hz_per_sec}
         M400