loft not working with guides ;-;

https://cad.onshape.com/documents/4415e93291eabbf9ee253eec/w/27d3564434c2b91b92bfdf5b/e/51a511cfa043954a4e85962d

i am working on a keyboard frame and need to perform a complex loft. in this previous discussion thread i asked how to fix the connections in my loft, and got the answer i needed. however, i wanted to try and find a way to remove some of the manual shenanigans involved, so decided to try building a feature to line everything up for me. i eventually got things mostly working, as seen here:

however, the curvature is wrong, which i created guides to help with. i know i don't strictly need guides for this, but it gives me an amount of control i want over the precise curve. unfortunately, it will not generate when i include the guides. here you can see the guides in debug red, and you see that the loft didn't generate:


i have tried using opLoft as:

opLoft(context, id + "loft1", {
            "bodyType" : ToolBodyType.SOLID,
            "profileSubqueries" : [definition.startProfiles, definition.endFace],
            "connections" : connections,
            "guideSubqueries" : evaluateQuery(context, qCreatedBy(id + "bridge1", EntityType.EDGE)),
            "derivativeInfo" : [
                { "profileIndex" : 0, "matchCurvature" : false, "forGuide": false, "adjacentFaces" : qSubtraction(qAdjacent(definition.startProfiles, AdjacencyType.VERTEX, EntityType.FACE), definition.startProfiles) },
                { "profileIndex" : 1, "matchCurvature" : false, "forGuide": false, "adjacentFaces" : qSubtraction(qAdjacent(definition.endFace, AdjacencyType.EDGE, EntityType.FACE), definition.endFace) },
            ],
        });

and using loft, when opLoft didn't work:

loft(context, id + "loft1", {
            "bodyType" : ExtendedToolBodyType.SOLID,
            "sheetProfilesArray" : [
                { "sheetProfileEntities" : definition.startProfiles },
                { "sheetProfileEntities" : definition.endFace },
            ],

            "startCondition" : LoftEndDerivativeType.MATCH_TANGENT,
            "adjacentFacesStart" : qSubtraction(qAdjacent(definition.startProfiles, AdjacencyType.VERTEX, EntityType.FACE), definition.startProfiles),
            "startMagnitude" : 1,

            "endCondition" : LoftEndDerivativeType.MATCH_TANGENT,
            "adjacentFacesEnd" : qSubtraction(qAdjacent(definition.endFace, AdjacencyType.EDGE, EntityType.FACE), definition.endFace),
            "endMagnitude" : 1,

            "addGuides" : true,
            "guidesArray" : guides,

            "matchConnections" : true,
            "connections" : connections,
        });

opLoft results in the error "LOFT_START_OR_END_CONDITIONS_WITH_GUIDES_FAILED", while loft results in the error "LOFT_NO_FACE_FOR_GUIDE_CLAMP". since i only have access to the loft code, i can't figure out what opLoft doesn't like. but i also could not get things set up for loft to stop complaining about that >:T.